CVE-2017-8903 Information

Description

Xen through 4.8.x on 64-bit platforms mishandles page tables after an IRET hypercall which might allow PV guest OS users to execute arbitrary code on the host OS aka XSA-213.

CVSS Vector

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Reference

http://www.securityfocus.com/bid/98426 http://www.securitytracker.com/id/1038386 https://blog.xenproject.org/2017/05/02/updates-on-xsa-213-xsa-214-and-xsa-215/ https://security.gentoo.org/glsa/201705-11 https://xenbits.xen.org/xsa/advisory-213.html

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

CHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.8